runge-kutta-2-transform ( rk1 tx..n delta -- tx..n' delta )

Vocabulary

math.runge-kutta

Inputs

rk1	an object
tx..n	an object
delta	an object

Outputs

tx..n'	an object
delta	an object

Definition

USING: kernel math.vectors sequences ;

IN: math.runge-kutta

: runge-kutta-2-transform
    ( rk1 tx..n delta -- tx..n' delta )
    [ swap [ [ v*n ] keep prefix 1/2 v*n ] dip v+ 2 v*n ] keep ;